@sgmrt · Post #2330 · 23.04.2025 г., 01:09
[EWL] CLEARED: Train service between #Tampines and #PasirRis have resumed. Free regular bus service ceased. - SMRT
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Изворен канал @pythonotes · Post #156 · 2 окт.
Те, кто в Python не первый день, хорошо знают, что на число можно умножить не только число, но и другие типы. Главное, чтобы у этих типов была реализация такой операции. # list >>> [1] * 3 [1, 1, 1] # tuple >>> (2, 3) * 3 (2, 3, 2, 3, 2, 3) # string >>> "A" * 3 "AAA" Так работает полиморфизм стандартных типов. Интересно здесь то, что это сработает и в том случае, когда порядок операндов обратный. То есть int умножить на [тип]. # list >>> 3 * [1] [1, 1, 1] # tuple >>> 3 * (2, 3) (2, 3, 2, 3, 2, 3) # string >>> 3 * "A" "AAA" Если хотите реализовать такое поведение в ваших классах то следует помнить два момента: 1. Если множитель справа, то вам нужно реализовать метод __mul__, наш класс это первый операнд, то есть слева. myType * 3 2. Если множитель слева, то вам нужно реализовать метод __rmul__, наш класс это второй операнд, справа. 3* myType Всё тоже самое можно делать и для других математических операторов. И если в этом примере действие и результат будут фактически одинаковыми, то бывают ситуации, когда это не так. Например, при умножении матриц имеет значение порядок операндов. Для других операторов, таких как деление или сдвиг, очень важно кто с какой стороны находится. >>> 2/4, 4/2 (0.5, 2.0) >>> 2<<3, 3<<2 (16, 12) >>> 100%15, 15%100 (10, 15) #tricks#basic
Пребарај: #pasirris
@sgmrt · Post #2330 · 23.04.2025 г., 01:09
[EWL] CLEARED: Train service between #Tampines and #PasirRis have resumed. Free regular bus service ceased. - SMRT
@sgmrt · Post #2329 · 23.04.2025 г., 00:59
[EWL] UPDATE: Fault cleared. Train service resumed. Free regular bus service is still available between #Tampines and #PasirRis. - SMRT
@sgmrt · Post #2325 · 23.04.2025 г., 00:09
[EWL] UPDATE: Please add 10 mins train travel time between #Tampines and #PasirRis, in both directions due to track point fault. Free regular bus and shuttle train services are available between #Tampines and #PasirRis. Normal train service is available for the rest of East West - SMRT
@sgmrt · Post #2324 · 22.04.2025 г., 23:44
[EWL] UPDATE: Please add 10 mins train travel time between #Tampines and #PasirRis, in both directions due to track point fault. Free regular bus services are available between #Tampines and #PasirRis. Shuttle train service is also available between #Tampines and #PasirRis. Train - SMRT
@sgmrt · Post #2323 · 22.04.2025 г., 23:29
[EWL]: Pls add an additional 10 mins of travelling time between #Tampines and #PasirRis. The eastbound train will turn around at #Tampines towards westbound. Free regular bus services are available between #Tampines and #PasirRis. Shuttle train service is also available between - SMRT
@sgmrt · Post #2322 · 22.04.2025 г., 23:29
[EWL]: Pls add an additional 10 mins of travelling time between #Tampines and #PasirRis. The eastbound train will turn around at #Tampines towards westbound. Free regular bus services are available between #Tampines and #PasirRis. Shuttle train service is also available between https://bit.ly/4jEYkYR - SMRT
@sgmrt · Post #2321 · 22.04.2025 г., 23:24
[EWL] UPDATE: Train svc is available btwn #Tampines and #PasirRis. Please add 10 mins train travel time from Tampines to Pasir Ris, towards Pasir Ris due to track point fault. Free regular bus service is available between Tampines and Pasir Ris. - SMRT
@sgmrt · Post #2320 · 22.04.2025 г., 22:59
[EWL]: Due to a track point fault, pls add additional 10mins train travel time between #Tampines and #PasirRis. Free regular bus service is available between #Tampines and #PasirRis. - SMRT
@sgmrt · Post #2497 · 16.09.2025 г., 16:54
[EWL] UPDATE: Our station staff are assisting the last bridging bus passengers to transfer to the last train at #TanahMerah towards #PasirRis station. - SMRT
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@sgmrt · Post #2421 · 06.08.2025 г., 00:59
[EWL] UPDATE: Due to a track point fault, please add additional 25mins train travelling time from #BoonLay to #BuonaVista towards #PasirRis. Free regular bus and bridging bus services are available between #BoonLay and #BuonaVista. - SMRT
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@sgmrt · Post #2415 · 05.08.2025 г., 23:39
[EWL] UPDATE: Due to a track point fault, please add additional 25mins train travelling time from #BoonLay to #BuonaVista towards #PasirRis. Free regular bus & bridging bus services are available between #BoonLay and #BuonaVista. - SMRT
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@sgmrt · Post #2413 · 05.08.2025 г., 23:19
[EWL] UPDATE: Due to a track point fault, pls add 25mins train travel time from #BoonLay to #BuonaVista towards #PasirRis. Free regular bus & free bridging bus svcs between #BoonLay and #BuonaVista. - SMRT
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